An efficient ultrasonic wavenumber-domain plane wave imaging method towards the inspection of curved structures

IF 3.8 2区物理与天体物理 Q1 ACOUSTICS Ultrasonics Pub Date : 2024-07-23 DOI:10.1016/j.ultras.2024.107416

Zhixuan Chang , Eryong Wu , Xintao Xu , Shiwei Wu , Keji Yang , Jian Chen , Haoran Jin

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Abstract

Ultrasonic phased array testing is commonly employed for inspecting curved structures. Conventional plane wave imaging techniques, based on delay-and-sum in the time-domain, offer high image quality and inspection accuracy but suffer from low frame rates due to their high computational complexity. In this work, an efficient wavenumber-domain imaging method that combines non-stationary wavefield extrapolation and $f$ - $k$ migration is proposed for curved structure inspection. Special emission focal laws are designed to generate a sequence of steered plane waves through the curved interface. The raw data is then extrapolated to the top boundary of the region of interest, followed by $f$ - $k$ migration to reconstruct images with high time efficiency. Simulation and experimental evaluations demonstrate a time reduction by a factor of up to 32.24 compared to conventional time-domain plane wave image reconstruction with equivalent image quality, highlighting its potential for monitoring flaws in real-time.

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用于检测曲面结构的高效超声波波域平面波成像方法。

超声相控阵测试通常用于检测曲面结构。传统的平面波成像技术基于时域延迟和，具有较高的图像质量和检测精度，但由于计算复杂度高，帧频较低。在这项工作中，提出了一种结合非稳态波场外推和 f-k 迁移的高效波数域成像方法，用于曲面结构检测。设计了特殊的发射聚焦法，以产生一系列穿过弯曲界面的转向平面波。然后，将原始数据外推到感兴趣区域的顶部边界，接着进行 f-k 迁移，从而以较高的时间效率重建图像。模拟和实验评估表明，与具有同等图像质量的传统时域平面波图像重建相比，时间最多可缩短 32.24 倍，这凸显了它在实时监测缺陷方面的潜力。

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来源期刊

Ultrasonics 医学-核医学

CiteScore

7.60

自引率

19.00%

发文量

186

审稿时长

3.9 months

期刊介绍： Ultrasonics is the only internationally established journal which covers the entire field of ultrasound research and technology and all its many applications. Ultrasonics contains a variety of sections to keep readers fully informed and up-to-date on the whole spectrum of research and development throughout the world. Ultrasonics publishes papers of exceptional quality and of relevance to both academia and industry. Manuscripts in which ultrasonics is a central issue and not simply an incidental tool or minor issue, are welcomed. As well as top quality original research papers and review articles by world renowned experts, Ultrasonics also regularly features short communications, a calendar of forthcoming events and special issues dedicated to topical subjects.